Dark energy without fine tuning
File(s)
Author(s)
Camargo-Molina, Jose Eliel
Markkanen, Tommi
Scott, Pat
Type
Journal Article
Abstract
We present a two-field model that realises inflation and the observed density of dark energy today, whilst solving the fine-tuning problems inherent in quintessence models. One field acts as the inflaton, generically driving the other to a saddle-point of the potential, from which it acts as a quintessence field following electroweak symmetry breaking. The model exhibits essentially no sensitivity to the initial value of the quintessence field, naturally suppresses its interactions with other fields, and automatically endows it with a small effective mass in the late Universe. The magnitude of dark energy today is fixed by the height of the saddle point in the potential, which is dictated entirely by the scale of electroweak symmetry breaking.
Date Issued
2019-10-04
Date Acceptance
2019-08-30
Citation
The Journal of High Energy Physics, 2019, 44 (10), pp.1-14
ISSN
1029-8479
Publisher
Springer Verlag (Germany)
Start Page
1
End Page
14
Journal / Book Title
The Journal of High Energy Physics
Volume
44
Issue
10
Copyright Statement
© The Author(s) 2019. This article is distributed under the terms of the Creative Commons
Attribution License (CC-BY 4.0) (https://creativecommons.org/licenses/by/4.0/), which permits any use, distribution and reproduction in
any medium, provided the original author(s) and source are credited.
Attribution License (CC-BY 4.0) (https://creativecommons.org/licenses/by/4.0/), which permits any use, distribution and reproduction in
any medium, provided the original author(s) and source are credited.
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000489727500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
Classical Theories of Gravity
Cosmology of Theories beyond the SM
COSMOLOGICAL CONSTANT
SCALAR-FIELD
Publication Status
Published
Article Number
ARTN 044
Date Publish Online
2019-09-16